An example

When "blood type" is selected, a description corresponding to this is displayed.(FIGS. 2 and 3)

Figure 2 Select blood type

Figure 3 Description text is displayed

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The characteristic of this example is that the "blood type" model and the "blood type explanation" model are not related from the database viewpoint.The ID to be displayed is specified by calculation formulas.

Blood type item

Blood type explanation item

Refer to the blood type description model in list box format.It is not reference linkage.There is also neither a blood type model nor a narrowing-down setting (depending on the items of the database).

Figure 10 Blood type explanation item (see model)

This list box contains "(not selected)"I will not prepare.

Figure 11 Do not prepare unselected

Set expression

Set an expression in the blood type explanation item.It controls its own display contents according to the value of blood type choice (ID part).If the blood type is unselected, we will make ourselves null.(Since this item does not prepare unselected, it will be blank as shown in Fig.)